The reformed property tax is in force since 2025. North Rhine-Westphalia and two other Länder allow their municipalities to apply a lower tax rate to residential properties than to commercial properties. As a result, it is no longer possible to use the previous method of taking equal account of property tax revenue in municipal fiscal equalisation. However, fears that a new method would be complicated or that property tax B would even have to be removed from the financial equalisation system are unfounded. In FiFo Report No. 35, Eva Gerhards and Michael Thöne show that the new ‘one for all’ method actually makes this possible in a simple, efficient and equitable manner. The study also recommends a solution for the optional property tax C on vacant, ready-to-build-on land.